TGR, round roof duct

Accessory for DTH roof fan. Together the roof fan and roof vent form an elegant architectural whole.

  • Supplied with perform or zinc flashing
  • Available in sizes corresponding to DTH - in 3 different lengths
  • Insulated for sound and condensation
General

TGR (round)

Roof vent TGR (round) has been specially developed for DTH roof fans. Together the roof fan and roof vent form an elegant architectural whole. The roof fan is mounted directly on top of the roof vent. The base can be mounted with a diffusor or the vent can be extended with a duct or T-pipe.

Installing a suction duct in the room enables an optimum air handling solution with minimum pressure drop and low sound levels, even at high airflow rates.

Externally, TGR is constructed from galvanised sheet, and under it 50 mm mineral wool, fine-mesh fabric and an internal galvanised perforated sheet. The roof vent can be supplied with an internal cable duct. Optional bracket. Warranty is void if the bracket is not mounted in accordance with the instructions.

TGR-TGK position   

The roof vent is insulated for sound and condensation. To avoid transfer of vibrations to the roof vent, a rubber ring is mounted on the fan.

The roof vent has been designed to take an electric cable via the integral cable duct. The installation cable is inserted in the cable duct at the bottom and drawn up by the safety switch, which is not normally an EXHAUSTO delivery. The safety switch is mounted on the control panel as shown in the guide 3004346. 

 

TGR is supplied as standard in 3 lengths and 6 sizes with PERFORM flashing appropriate to the roof pitch. TGR is also available with zinc flashing. Must be stated on order.


 

Damper and extractor fitting

DTV/DTH  160 200 250 315 400 450
Standard integrated
AOR size 160 200 250 315 400 450
Additional accessory
FLD size 160 200 250 315 qty. 2
315
-

Dimensions

Dimensions

TGR diameter

DTH  TGR

Dimensions

 Weight*

Str. Str.

C1

C
ø mm

L1
mm

 Max
V °

 
kg

 DTH160
TGR160 - 600  ø160 ø268  600  30  9
TGR160 - 900  ø160 ø268  900  45  11
TGR160 - 1200  ø160 ø268  1200  60  13
 DTH200 TGR200 - 600  ø200 ø305 600  30  10
TGR200 - 900  ø200 ø305  900  45  13
TGR200 - 1200  ø200 ø305   1200  60  15
 DTH250
TGR250 - 600  ø250 ø370  600  20  12
TGR250 - 900  ø250 ø370  900  45  16
TGR250 - 1200  ø250 ø370  1200  60  19
 DTH315
TGR315 - 600  ø315 ø440  600  20  16
TGR315 - 900  ø315 ø440  900  40  22
TGR315 - 1200  ø315 ø440  1200  55  26
DTH400 TGR400 - 600  ø400 ø510  600  15  19
TGR400 - 900  ø400 ø510  900  35  25
TGR400 - 1200  ø400 ø510  1200  50  31

*Weight includes AOR and 30° PERFORM flashing

Max. roof pitch for length L1:
Flashing can vary by ±2.5° relative to the given roof pitch


Flashing

Flashing and roof pitch

Flashing can vary by  ±2.5°relative to the given roof pitch.

 DTH  Vinkel v A [mm] E [mm] G [mm] F [mm] 
 160, 200  0°< v ≤ 2°  300  100 100   100
 2°< v ≤ 60°  250  250  250  300
 250, 315, 400  0°< v ≤ 2°  350  100 100   100
 2°< v ≤ 60°  350  250  250  300

 

With zinc flashing, dimensions E, G and F are always 100 mm.


 

 

 

AOR - anti-backdraught shutter

AOR Anti-backdraught shutter (standard)

As standard the roof vents are mounted with anti-backdraught shutter AOR, but can also be specially ordered without this.
When cleaning the roof vent and/or connector duct, the anti-backdraught shutter is easily detachable without use of tools.
The anti-backdraught shutter AOR opens when the fan is in operation.

AOR spjæld til TGK/TGR

Pressure loss graph

Pt = total pressure drop
Temperature: t = 20 °C
Density = 1.2 kg/m3

5107610, AOR Tryktabskurve


Installation

Installing TGR

TGK_mounting

Make a hole in the roof about 30 mm larger than the vent, and loosen overlying tiles/panels, sliding them upwards to permit insertion of flashing.

Carefully position the vent on the roof with the flashing level with the roof tiles. Fix the brackets to the vent, lifting it by about 5 mm when the brackets are subsequently fixed to the rafters. This will ensure that the whole weight rests on the brackets.

Roll out the flashing and knock it carefully into shape (with PERFORM, a rubber hammer or sandbag must be used). Replace overlying tiles/panels over the flashing.


Installation examples

 TGR, eksempel 1 An EXHAUSTO roof fan, roof vent and diffusor at the base of the roof vent will provide an optimum air handling solution for the minimum of space, for example on flat or sloping roofs with a short distance to the extraction point. 
   
 TGR, eksempel 2  If there is a long distance between the roof vent and the extractor fitting, an extension can be formed with spiral tube or similar, with a duct fitting directly attached to the base of the roof vent.
   
 TGR, eksempel 3  If ventilation is required from several locations, a spiral tube can be mounted to the base of the roof vent with duct fittings or T-pieces, sound locks etc. connected to a complete ducting system to the desired locations.

 

 

Sound data

TGR - sound data

Lp = sound pressure level dB(A) in the room

Assumptions for Lp:

Sound data has been measured under the following conditions.
  The sound level is stated for an airflow equal to 80% of max. output for DTH roof fan (1400 rpm) of the same size as TGR.
  Roof fan DTH is mounted on TGR roof vent without anti-backdraught shutter AOR. In case of integral AOR, the reading will be 3 dB(A) higher.
  No fitting at the base of TGR.
  Extraction is located in the middle of the ceiling.
  Sound absorption in room = 10 m2 sabin. 
 

Measurement point in the middle of the room

TGR 125
Hz
250
Hz
 500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
Lp
DTH
dB(A)
Lp
DTV
dB(A)
 160-600  1 22   23 22   12  5  36  33
 160-900  2  8  23  27  28  17  8  34  31
 160-1200  4  11  25  28  33  22  10  32  28
 200-600  3  5  15  25  24  13  5  44  42
 200-900  5  6  20  29  30  18  7  42  40
 200-1200  7  11  26  31  34  23  9  38  36
 250-600  4  7  13  19  12  7  4  47  48
 250-900  5  9  20  26  18  10  6  45  46
 250-1200  6  11  25  30  23  13  7  43  44
 315-600  4  5  11  15  9  4  4  58  58
 315-900  5  8  15  20  12  5  5  55  55
 315-1200  7  10  20  25  15  7  6  53  52
 400-600  2  5  9  11  6  4  3  63  65
 400-900  2  6  14  20  9  6  5  61  62
 400-1200  4  7  14  22  11  7  7  60  61

Tolerance +/- 4dB. Load attenuation is stated without the sound level from AOR.


 

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